Closes claudioc#182 and claudioc#183

Fixes claudioc#164

Fixes a crash with empty repos

Fixes claudioc#118

Version bump

Fixes claudioc#120

Version 1.5.0

- Adds the ability to revert to a specific revision from the history
page (@brad7928)
- Adds support for directives (see PR claudioc#115) (@creynold)
- Adds support for Table of Contents (@creynold and @brad7928)
- Adds a new `emptyEmailMatches` configuration parameter (see README)
- Added the /etc configuration directory (for useful configurations we
may need)
- Fixes claudioc#110 (@brad7928)
- Fixes claudioc#109
- Fixes claudioc#10

Fixes claudioc#68, tables issue

Removes iconv and closes claudioc#93

Fixes claudioc#99 and claudioc#95